Mederi

The ancient moon known as Mederi is an artificially constructed planetoid, the pattern for several other "Mederi Centers" specializing in various forms of medicine. The original Mederi is not where life-forms go to get better, however... rather, the planet operates as a euthanasia clinic, sending its patients into utopic dreams to ease their passing from this world.

Fiction

IDW Generation 1 continuity

According to Ratchet, Mederi was supposedly constructed by the Omega Guardians many millions of years ago, predating the rise of Cybertronian civilization. The planet was built on the same "spiritual ley-line" that Troja Major's Howling Town capitalized off of. The planet came to be known as a "chameleonic wellness station" fuelled by telepathic aliens; when travelers came within range of the planet, the telepaths would read minds and reshape the holomatter environment to the patient's liking. Terminally ill patients travelled to Mederi so that they could "die happy."

Some twelve million years ago, the Knights of Cybertron, suffering from an outbreak of atrophosia, suposedly stumbled across the planet. Tired, scared, and dying from illness, the telepaths determined that the Transformers just wanted to go home and created a "perfect" Cybertron for them to inhabit, which would come to be remembered in Cybertronian legend as the mythical "Cyberutopia." You Are Here Getaway and the crew of the Lost Light evidently discovered the planet, which appeared to them as a representation of Cyberutopia. Journey's End

In the modern day, the Decepticon Scavengers warped to Mederi while trying to escape Scorponok's forces, but were tricked into thinking they'd landed on Garrus-9 due to their desire to reach the planet. You Are Here Shortly afterwards, Team Rodimus arrived on the planet after an accident in the Warren, following an inexplicably lucid Ten's instructions to guide their ship to a nearby Mederi facility to cure an unspecified illness Ratchet had contracted. Believing that they had died, Mederi created an interpretation of the Afterspark for them to inhabit while they began the process of "ascending:" in reality, the program was killing them off, one by one. Metastasis The Autobots and Decepticons were able to team up and escape the simulation by detaching the telepaths from their machine. You Are Here